Cigar Oasis Plus uses the same microprocessor technology and features as the Cigar Oasis Excel, but it provides more rapid humidification for use on larger personal humidors, chests, end tables and other similar enclosures up to 4-10 cu ft (up to 1,000 cigars). You can refill the new Cigar Oasis Plus very easily as it now uses foam in the water cartridge, eliminating wicks and water splashing around. AC power supplied. Battery case may be purchased separately for battery operation. Size: 3.5" x 2" x 6". Features Micro-USB connections and Wifi capability.